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Improve error messages for *Dynamic signature mismatches #6354

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scabug opened this issue Sep 10, 2012 · 4 comments
Closed

Improve error messages for *Dynamic signature mismatches #6354

scabug opened this issue Sep 10, 2012 · 4 comments
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@scabug
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scabug commented Sep 10, 2012

import language.dynamics

class X(val i: Int) extends Dynamic {
   def selectDynamic(name: Int) = i
}

object F {
   val x = new X(3)
   val z = x.y
}
F.scala:17: error: type mismatch;
 found   : String("y")
 required: Int
        val z = x.y
                ^

A better error message would indicate that selectDynamic has the wrong signature. A related situation is when selectDynamic has no arguments, which gives this error message:

error: Int does not take parameters
    val z = x.y
            ^
@scabug
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scabug commented Sep 10, 2012

Imported From: https://issues.scala-lang.org/browse/SI-6354?orig=1
Reporter: @harrah
Affected Versions: 2.10.0-M7, 2.10.0
Other Milestones: 2.10.0

@scabug
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scabug commented Sep 13, 2012

@jsuereth said:
Bumping to critical since this situation will probably happen frequently to those new to Dynamic.

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scabug commented Sep 18, 2012

@gkossakowski said:
Nada promised to take a look.

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scabug commented Sep 19, 2012

@gkossakowski said:
Fixed in scala/scala#1343

@scabug scabug closed this as completed Sep 19, 2012
@scabug scabug added this to the 2.10.0-M7 milestone Apr 7, 2017
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